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The Student Success Commons at York County Community College: MAT 126: Trigonometry

Algebra Basics

Trigonometry Calculators

Radians and Degrees

Refer to the table provided to convert from degrees to radians or vice versa.

Radians to Degrees Conversion Rules

Click to enlarge

For example, to convert 30° to radians we would multiply 30 by (π/180) and simplify:

= 30π/180
= 1π/6
= π/6 radians

So 30° is equal to π/6 radians.

Trigonometry Summary

Trigonometry Resource Links

Unit Circle

(Click to enlarge)

Did you know you don't have to memorize the entire unit circle? Watch this video for a quick trick and some other great information.

Sin/Cos = Tan

Image courtesy of CueMath

Greek Letters

Letter Name  Uppercase Character Lowercase Character
Alpha Α α
Beta Β β
Gamma Γ γ
Delta Δ Δ
Epsilon Ε ε
Zeta Ζ ζ
Eta Η η
Theta Θ θ
Iota Ι ι
Kappa Κ κ
Lambda Λ λ
Mu Μ μ
Nu Ν ν
Xi Ξ ξ
Omicron Ο ο
Pi Π π
Rho Ρ ρ
Sigma Σ σ
Tau Τ τ
Upsilon Υ Υ
Phi Φ φ
Chi Χ χ
Psi Ψ ψ
Omega Ω ω


How to Pronounce Greek Letters (American English) For Science and Mathematics:

Note: Though different than the above video, in your class you're more likely to hear mu is pronounced like "mew", nu is pronounced like "new" and upsilon is usually pronounced "oop·suh·laan".

You won't need to memorize or use all Greek letters in your trigonometry class. Some of the most common ones are α (alpha), β (beta), γ (gamma), θ (theta)—these are usually used to represent angles—π (pi), and ω (omega).




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